This is the mail archive of the mailing list for the glibc project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PATCH v2 01/15] RISC-V: Build Infastructure

On Sat, 23 Dec 2017 04:44:28 PST (-0800), wrote:
On Fri, 22 Dec 2017, Palmer Dabbelt wrote:

If I understand what's going on correctly here, we support exceptions in the
soft float ABI when built with hardware floating point instructions, but
otherwise we don't (we're always round nearest).  I believe that means we need
to set "with_fp_cond=1" when building with hardware floating point (regardless
of ABI), and "with_fp_cond=0" otherwise.

Does this look sane?

Yes, but it needs to go along with having a nofpu sysdeps directory or
directories with an Implies file or files pointing to ieee754/soft-fp
(make sure that the soft-float configurations do end up with
ieee754/soft-fp before other ieee754 directories in their sysdeps
directory ordering).

OK. I think we might need to reorganize our directories a bit to do that, but I'll try and figure something sane out.

> > +abi-ilp32-options     := -D__SIZEOF_INT__=4
> abi-* options variables are no longer used with the current bits/syscall.h
> generation mechanism, so you should remove all settings of such variables
> from the patch.

OK, we'll remove them for the v3.

To be clear, abi-*-condition variables are still needed (used in
generating gnu/lib-names.h, for example); it's just abi-*-options that are

Thanks -- I noticed that when going through the commit history to see what other ports had done here.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]